Lathon millee and hieam lighthall



(H0 Moder.)

- L. MILLER & H. LIGHTHALL.

' Plow.

No. 231,441. Patented Aug. 24,1880.

N. PErERS. PHOTO-UTHOGRAPHER, WASHINGTON. n c.

UNITED STATEs PATENT OFFICE.

LATHON MILLER AND HIRAM LIGHTHALL, OF CHELSEA, MICHIGAN.

SPECIFICATION forming part of Letters Patent No. 231,441, dated August 24, 1880.

Application filed May 19, 1880.

To all whom it may concern:

Be it known that we, LA'lHON MILLER and HIRAM LIGHTHALL, of Chelsea, in the county of Washtenaw and State of Michigan, have invented certain Improvements in Plows, of which the following is a specification.

This invention relates to certain improvements in plows; and it consists, first, in the means whereby the jointer or colter arm is attached and adjusted; and, secondly, in the employment of an attachment to the standard, to which the jointer-arm is fastened, and which also serves as a shin-piece to the share, all of which will be hereinafter more flilly described, and set forth in the claims.

Figure 1 is a side view of the shin-piece broken off at .70 .00, but shown completein Figs. 5 and 6. Fig. 2 is a reverse View of Fig. 1. Fig. 3 is a side view of thejointer-arm broken off aty 3 Fig. 4 shows both of the pieces connected together and attached to the standard. Fig. 5 shows the standard with all the parts of the plow but the share. Fig. 6 is the shin-piece complete.

A is the shin-piece, in the arm of which is, first, a countersunk bolt-hole, a, adjoining which is a hole, a, and near the end a slot, a. ()n the end on the reverse side are serrations a. (Shown in the section in Fig. 2.)

B is a part of the jointer-arm, which is formed to correspond with that part of A to which it is attached by a bolt, D, which passes through holes a and b, it being countersunk at d. On B, at its end, are serrations b, corresponding with those on A. There is also a slot, 1), in B, corresponding with that one a in A, allowing a free movement for a bolt which may be used in the same.

0 is the standard, to which is affixed the landside D and the mold-board. (Not shown in the drawings.)

In Fig. 4, at E, is shown the connection of the two pieces A and B at the serrations, where they are interlocked. The two pieces A and B are pivoted together by the bolt D. By loosening nut cl the arm B is unlocked from the serrations and can be adjusted up or down, after which it is to be again locked by the nut d.

The shin-piece is attached to the standard 0 by the bolt F, the head of which is countersunk. A circular bearing-space is formed on the inside at d, Fig. 2, and a correspond- (N'o model.)

ing boss is formed on the inside of the arm B at (1, so that a firm bearing is had between the two surfaces when held together, and serve for their steady movement when unlocked.

The standard 0 is formed U-shapcd in crosssection, and to the inside flange, c, the arm of the shin-piece A is fastened by a bolt, F, with countersunk head f, which passes through hole a in A.

At 0 is a hole for a fastening-bolt, by which it is secured to the standard 0 down near the shin, as seen in Fig. 5.

From A to A the shin-piece A is made sharp, and the edge from 6 to e is square and the same thickness as the mold-board, which is to be secured by bolts at g g 1, thus forming a removable shin orcutting-edgefor the moldboard, which, when worn out. can readily be replaced without renewing the mold-board, which is a great advantage economically.

The jointer-arm B (represented as curved in Fig. 5) may be of any form. It is fastened by the bolt D and the serrations b to the shinpiece arm A, and not to the standard. Should any obstruction cause a break, which is sometimes the case, the standard will not be broken, but the cheaper piece-the shin -piece A which can more readily and economically be replaced. This arrangement allows a flanged standard to be used, whereas it the jointer-arm be attached to the standard it must be solid. In this arrangement the jointer-arm and shinpiece can be attached to any form or pattern of standard.

What we claim, and desire to secure by Letters Patent of the United States, is

1. The shin-piece A, having an extensionarm serrated on one side, and the countersunk socket a, in combination with the jointerarm B, having corresponding serrations, and a projecting boss, I), to correspond with the socket n. in the arm of shin-piece A, substantially as and for the purpose described.

2. The combination of the jointer-arm B, with its serrations, and boss b, with the shinpiece A, having its serrated arm and sunken socket a, and the standard of a plow, substantially as and for the purpose described.

LATHON MILLER. HIRAM LIGHTHALL. Witnesses:

W. E. DEPEW, M. J. LEHMAN. 

